Anyone know about map sensors? - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
LinkBack Thread Tools Rate Thread Display Modes
post #1 of 3 (permalink) Old 04-07-2010, 12:45 AM Thread Starter
Intrepid Fan
Join Date: Oct 2008
Location: Warwick
Posts: 189
Feedback: 0 / 0%
Anyone know about map sensors?

So I'm having some problems with rough idle, poor gas mileage, low power to accessories, and bucking and hard shifts. My steering wheel is also hard to turn. Sometimes it will be easy enough to turn with one finger on a hot day (but only for a few seconds) until it is hard once again.

So today I unplugged my map sensor, and pulled on the wire a bit to find where it went. Now all of a sudden everything is working better, and my car is running better. Does anyone know what that vacuum line is that connects to the map sensor? What does it do? I think the hose may have a hole in it, or its not securely on. My gauges light up brighter now, I have more horsepower, and my system hits harder.

It is still not 100% fixed, but what would cause this?
Aviation005 is offline  
Sponsored Links
post #2 of 3 (permalink) Old 04-07-2010, 11:30 AM
Intrepid Pro
mass04's Avatar
Join Date: Jun 2003
Location: Maryland
Posts: 1,341
Feedback: 0 / 0%
MAP sensor = manifold absolute pressure, basically this sensor tells the ECM what the absolute pressure of the intake manifold is ie vacuum while vehicle is running. The ECM takes this data and factors this and other values to adjust timing and air/fuel mix. If you have a vacuum leak this could be your problem. Fix the leaking line, if it is a bad and see if it improves. But, you could also have a bad wire somewhere according to your post.
mass04 is offline  
post #3 of 3 (permalink) Old 04-07-2010, 11:43 AM Thread Starter
Intrepid Fan
Join Date: Oct 2008
Location: Warwick
Posts: 189
Feedback: 0 / 0%
So the vacuum line from my left throttle body leading to my mass airflow sensor was totally disconnected.... I reconnected it and now my car idles better, my sound system works better, and I have faster acceleration.

My cars almost perfect again but I think my evap canister is dead/dying.
The vacuum line going into the evap canister has very strong suction, but the vacuum line coming out of the canister, going into the body of the car, has almost no suction. Could the evap canister be blocking some airflow? The canister also clicks slowly all the time. Although there was this one time where it doubled its clicking speed..

If you have any knowledge of this i'd appreciate it
Aviation005 is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Member names may only be composed of alpha-numeric characters. (A-Z and 0-9)

!!ATTENTION ADVERTISERS!! If you intend on advertising anything on this forum, whatsoever, you are required to first contact us here . Additionaly, we do NOT allow BUSINESS NAMES unless you are an Authorized Vendor. If you own a business, and want to do sales on this site via posting or private message, you will need to follow the rules. Shops, Stores, Distributors, Group Buys without being authorized will see your account terminated.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Random Question

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes Rate This Thread
Linear Mode Linear Mode
Rate This Thread:

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome